:root {
  --bg: #0b0f19;
  --bg-2: #111827;
  --panel: #1f2937;
  --text: #f8fafc;
  --muted: #94a3b8;
  --cyan: #22d3ee;
  --purple: #8b5cf6;
  --pink: #f472b6;
  --border: rgba(148, 163, 184, 0.18);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; padding: 0;
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; }

.site-header {
  position: fixed; top: 0; left: 0; right: 0;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 6vw;
  background: rgba(11, 15, 25, 0.75);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.brand { display: flex; align-items: center; gap: 12px; color: var(--text); font-weight: 700; font-size: 1.1rem; }
.brand-logo { width: 34px; height: 34px; }

.nav { display: flex; align-items: center; gap: 14px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 18px; border-radius: 10px; font-weight: 600;
  border: none; cursor: pointer; transition: transform .15s, opacity .15s;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
  background: linear-gradient(135deg, var(--cyan), var(--purple));
  color: #fff; box-shadow: 0 8px 24px rgba(34, 211, 238, 0.22);
}
.btn-outline {
  background: transparent; color: var(--text);
  border: 1px solid var(--border);
}
.btn-outline:hover { border-color: var(--cyan); color: var(--cyan); }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-lg { padding: 14px 26px; font-size: 1.05rem; border-radius: 12px; }

.hero {
  min-height: 100vh;
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px;
  align-items: center; padding: 120px 6vw 80px;
  background:
    radial-gradient(circle at 20% 30%, rgba(139, 92, 246, 0.14), transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(34, 211, 238, 0.10), transparent 45%);
}

.eyebrow {
  display: inline-block; padding: 6px 14px; border-radius: 20px;
  background: rgba(34, 211, 238, 0.10); color: var(--cyan);
  font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em;
  margin-bottom: 18px;
}

.hero h1 { font-size: clamp(2.6rem, 5vw, 4.4rem); line-height: 1.08; margin: 0 0 22px; font-weight: 800; }
.hero-sub { color: var(--muted); font-size: 1.15rem; max-width: 520px; margin: 0 0 34px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-visual { position: relative; display: flex; justify-content: center; align-items: center; min-height: 420px; gap: 30px; }
.phone {
  width: 210px; height: 410px; border-radius: 32px; border: 1px solid var(--border);
  background: var(--bg-2); box-shadow: 0 24px 60px rgba(0,0,0,0.45);
  position: relative; padding: 10px; overflow: hidden; flex-shrink: 0;
}
.phone-1 { transform: rotate(-6deg) translateY(-24px); z-index: 2; }
.phone-2 { transform: rotate(8deg) translateX(-40px) translateY(34px); z-index: 1; }
.phone-notch { position: absolute; top: 10px; left: 50%; transform: translateX(-50%); width: 80px; height: 22px; background: #000; border-radius: 0 0 12px 12px; }
.phone-screen {
  width: 100%; height: 100%; border-radius: 24px; background: linear-gradient(180deg, #111827, #0b0f19);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px; position: relative;
}
.signal-bars { display: flex; gap: 4px; position: absolute; top: 44px; right: 22px; }
.signal-bars span { display: block; width: 5px; border-radius: 2px; background: var(--cyan); }
.signal-bars span:nth-child(1) { height: 8px; }
.signal-bars span:nth-child(2) { height: 12px; }
.signal-bars span:nth-child(3) { height: 16px; }
.signal-bars span:nth-child(4) { height: 20px; }
.globe { font-size: 3rem; filter: drop-shadow(0 0 18px rgba(34, 211, 238, 0.35)); }
.connected { color: var(--cyan); font-weight: 700; font-size: 1.1rem; margin: 0; }

.features { padding: 80px 6vw; }
.section-title { text-align: center; font-size: 2.2rem; font-weight: 700; margin: 0 0 44px; }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; max-width: 1200px; margin: 0 auto; }
.feature-card {
  background: var(--bg-2); border: 1px solid var(--border); border-radius: 18px;
  padding: 28px; transition: transform .2s, border-color .2s;
}
.feature-card:hover { transform: translateY(-6px); border-color: var(--cyan); }
.feature-icon { font-size: 2.2rem; margin-bottom: 14px; }
.feature-card h3 { margin: 0 0 10px; font-size: 1.15rem; }
.feature-card p { color: var(--muted); margin: 0; font-size: 0.95rem; }

.providers { padding: 60px 6vw; text-align: center; }
.provider-logos { display: flex; justify-content: center; gap: 18px; flex-wrap: wrap; }
.provider-pill {
  padding: 14px 28px; border-radius: 40px; background: var(--bg-2); border: 1px solid var(--border);
  color: var(--text); font-weight: 700; font-size: 1.05rem;
}

.contact { padding: 100px 6vw; text-align: center; background: radial-gradient(circle at 50% 50%, rgba(139, 92, 246, 0.10), transparent 55%); }
.contact-sub { color: var(--muted); font-size: 1.1rem; max-width: 460px; margin: 0 auto 28px; }

.site-footer { text-align: center; padding: 40px 6vw; color: var(--muted); border-top: 1px solid var(--border); font-size: 0.9rem; }

@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; text-align: center; }
  .hero-cta { justify-content: center; }
  .hero-visual { min-height: 340px; gap: 20px; }
  .phone { width: 170px; height: 330px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .site-header { padding: 14px 5vw; }
  .brand-text { display: none; }
  .hero { padding: 100px 5vw 60px; }
  .hero h1 { font-size: 2.1rem; }
  .hero-sub { font-size: 1rem; }
  .btn-lg { padding: 12px 20px; font-size: 0.95rem; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card { padding: 22px; }
  .section-title { font-size: 1.7rem; }
  .phone-2 { display: none; }
  .phone-1 { transform: none; }
  .provider-pill { padding: 12px 22px; font-size: 0.95rem; }
  .contact { padding: 80px 5vw; }
}

@media (max-width: 380px) {
  .hero h1 { font-size: 1.8rem; }
  .brand-logo { width: 28px; height: 28px; }
  .btn-outline { padding: 8px 12px; font-size: 0.85rem; }
}